: If your game started crashing after the April 20, 2026 update, right-click CK3 in your Steam Library : Properties > Betas > Beta Participation and select an older version like 1.18.4 (Crane) .
: Disable the Steam Overlay , Discord Overlay , and performance monitors like MSI Afterburner , as these can interfere with the game’s loading process. Optimization for Stability
: Disable all mods in the launcher and try to start a new game. If it works, re-enable mods one by one to find the culprit.
: Delete the "Crusader Kings III" folder located in Documents\Paradox Interactive\ . Note: Back up your save games folder first to avoid losing progress.
: If your game started crashing after the April 20, 2026 update, right-click CK3 in your Steam Library : Properties > Betas > Beta Participation and select an older version like 1.18.4 (Crane) .
: Disable the Steam Overlay , Discord Overlay , and performance monitors like MSI Afterburner , as these can interfere with the game’s loading process. Optimization for Stability
: Disable all mods in the launcher and try to start a new game. If it works, re-enable mods one by one to find the culprit.
: Delete the "Crusader Kings III" folder located in Documents\Paradox Interactive\ . Note: Back up your save games folder first to avoid losing progress.